Mechanism for automatically changing shuttles in looms.



LES IN LOOMS.

MECHANISM FOR A APPLlCATlON FILED NOV. 2. 1917.

Patented Apr. 11,1919.

max annacn, or BEEBL'IEN, Gamma;

maarscrn vooa rnx'rmtmnusrmn NETHERLANDS. i

assrenoa 'ro ran mate narnorrarrn Lannacn an .00., or n'rnncnr,

iinonemsiu non an'roivre'rrcatnv on'a'n'eme snn'r'rnns rn' Leone.

messed To all whom it may concern:

-ments ina mechanism for Be it known that 1, MAX AUERBACH, a subject of the Emperor of Russia, residing at Bremen, Germany, 52 Schuberstrasse, have invented certain new and useful Improve ments in- Mechanism for Automatically Changing Shuttles in Looms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make'and use the same.

Figure 1 is a front elevation of my mechanism.

Fig. 2 isa' plan view thereof.

Fig. 3 is a sectional side elevation taken along the line A-B of Fig. 1.

The present invention relates to improvechanging shuttles in looms, especially to those of the kind accordin to the German Patent 275,568 in which t e shuttle box is provided with a pivotally mounted rear wall and a slidable front wall, the former being released in order to actuate a mechanism which pressesby means of a shuttle operating member the lower fresh shuttle against a hinged flap by whose displacement the shuttle box front wall is slid so that the fresh shuttle is pushed into the shuttle box and at the same time returns the rear wall to its normal position.

The advantage of this known system consists in that a special mechanism is provided for sliding theshuttle box front wall; however, the mechanism presents the drawback that a certain amount of time is required for its coming into action, so that the number of revolutions of the loom must be altered, While, moreover, the construction is rather complicate. The principal drawback, however, is that theiresh shuttle is projected with great force against the hinged shuttle box fla in order to displace same.

The present invention relates to improvements by which the drawbacks enumerated above are avoided while the subject constructionpossesses all advantages of the system cited above. The latter being especially intended .for looms with a high number of myolutions the question of the stroke produced by the projection of the shuttle against the flap is, apart from the noise produced when Specification oi Letters Patent.

automatically Patented Apr. 3, rate.

Application filed November 21, 1917. Serial No, 203,223.

the loom is. running, of vital importance for the mechanism as a whole.

According to the present invention the hinged 'fiap' is dispensed with the shuttle box front wall being slid by the catch normally locking the shuttle box rear wall at the moment the catch releases this wall. In this way the insertion of the shuttle into the box occurs without any shock while, moreover, the changing mechanism may be driven at a higherspeed than the above described one; the difl'erent parts are returned to their original position by the displacement of the pivoted rear wall'caused by the fresh shuttle, as already known.

. An additional advantage of this invention is that shuttles of difi'erent length may easily be inserted.

The fresh shuttle l to be inserted is pushed toward the shuttle box front wall 2 by the I to allow the shuttle 3 to be inserted. Accordingto the invention the sliding action is caused independently from the insertion by means of the catch 6 or by the displacement of the pivoted rear wall 7, the latter being released by the spent shuttle or by the failure of the weft so that the catch 6 assumes the position 6, the rear wall Y pivoting at the same time inwardly into the shuttle box in order to act as an ejector removing at the next stroke the spent shuttle or the shuttle with the broken weft.

The connection between the shuttle box front wall 2 and the catch 6 which after releasing the rear wall is pivoted to occupy the position 6' may be realized in many difterent manners. According to the form of execution shown in the drawings the connection is obtained in a very simple manner.

The cross beam 8 of the slay is provided with rolls 9 over which passes a cord 10 aflixed with one end to a pulley 11 arranged on a shaft 12 carried by the shuttle box side walls, with its other end by means of an eye or the liketo a projection 13 of the catch 6. The shaft 12 carries two more pulleys 1a whose cords are affixed to the shuttle box front wall 2 vertically guided in slots 15. Consequently when the catch 6 is swung to its position 6' the shuttle box front wall 2 is slid by the 1111 of the Cord 10 sim1.1ltane- 'ously with tie inward motion of the rear wall I about its hinges; in this way the ejection of the spent shuttle is realized While at the same time the shockless insertion of a fresh. shuttle is prepared.

l't is obvious that the catch 6 and the shuttlebox front wall 2 may be also connected by any other means instead of a cord, for example by a lever mechanism, or the like.

, Having now particularly ascertained and described the nature of my said invention and. the manner in which the same is to be performed, I declare that what I claim is 1.11 1 a mechanism for automatically changing shuttles in looms, including a pivotall-ymounted shuttle box rear wall and slidable shuttle box front wall, a cross-beam, guide rollersthereon, a'- cord passing over said guide roll, a catch, a shaft, a pulley mounted thereon, further pulleys on the same shaft, and cords for connecting said pulleys with the slidahle front wall and guiding provisions incasing said front wall for permitting the same to move in a vertica'l direction. 2. A mechanism for automatically changing shuttles in looms, including a pivotally mounted shuttle box rear wall, and a slidable ing shuttles in looms,

shuttle box front wall, means for positively connecting said rear wall to said front walls,

a cross-beam, guide rollers thereon, a cord passing over said guide rollers, a catch, a shaft, a pulley mounted thereon, further pulleys on the same shaft, and cords for connecting said pulleys with the slidable' front wall and guiding provisions incasing f mounted thereon, further pulleys on the same shaft, and cords for connecting said pulleys with the slidable front wall and guiding provisions incasing said front wall or permitting the same to move in a vertical direction.

In testimony whereof, I have a'ffixed my signature, in presence of two witnesses.

' MAX AUERBACH.

Witnesses:

F. BAn'rELs, H. NETHARD. 

